What type of camera are you using…I’m assuming a very wide angle, but the problem as I see it, is that you have some really bad lens distortion. I think I would first try rotating your camera, so for instance, make the bar straight horizontally in a new render. You will still have lens distortion going on vertically most likely.
I would then take that render into Gimp or photoshop and work on the vertical lens distortion. (I’m not positive if gimp has any lens correction filters) I’m sure you are trying to show as much of the saloon as possible ( I get that) but anyone who uses wide angle lens, like in real estate photography, most always needs to do some lens correction. But you will have much better luck with it I think if you can get a render with at least the horizontal lines actually going horizontal.